Undestanding maillog?

Andrew Morgan morgan at orst.edu
Thu Oct 24 18:49:06 EDT 2013

On Thu, 24 Oct 2013, Charles Bradshaw wrote:

> Hello List
> Sorry about the long post.
> I am trying hard to get to understand my /var/log/maillog when
> connecting to cyrus-imapd.
> When I open Evolution and connect /var/log/maillog says:
> Oct 24 21:52:33 dell2600 imaps[15186]: starttls: SSLv3 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits new) no authentication
> Oct 24 21:52:33 dell2600 imaps[15186]: login: testbox.mydomain.com [] me at mydomain.com DIGEST-MD5+TLS User logged in SESSIONID=<dell2600.bradcan.homelinux.com-15186-1382647953-1>
> What does the first log entry above "no authentication" mean? Imediatly followed by User logged in!

It means the IMAP client did not authenticate with an SSL client 
certificate.  SSL was used for connection encryption, but not 
authentication.  The client authenticated using the DIGEST-MD5 method 
after an encrypted SSL connection was established.


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